CN203813061U - High-voltage ground clamp - Google Patents
High-voltage ground clamp Download PDFInfo
- Publication number
- CN203813061U CN203813061U CN201420218153.9U CN201420218153U CN203813061U CN 203813061 U CN203813061 U CN 203813061U CN 201420218153 U CN201420218153 U CN 201420218153U CN 203813061 U CN203813061 U CN 203813061U
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- CN
- China
- Prior art keywords
- extension arm
- clamp
- folder
- arc
- hinged
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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- 239000002184 metal Substances 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 238000009413 insulation Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000011514 reflex Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
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- Clamps And Clips (AREA)
Abstract
The utility model discloses a high-voltage ground clamp, comprising a left clamp board and a right clamp board respectively formed by a clamp plate and a clamp holder, and the left clamp board and the right clamp board are connected through a pin roll. Two extending arms are respectively hinged with the outer surfaces of ends of the two clamp plates through hinge pins which are provided with end caps on the heads, the end being far away from the pin roll hinge position. Outer cylindrical surface of the hinge pin is sleeved with a compression spring which is disposed between the end cap of the hinge pin and the outer surface of the extending arm. The inner surface of the extending arm is flush with the inner side surface of the clamp board when hinging along a clamp board extending direction. The positions of the two clamp boards which are hinged with the extending arms are respectively provided with limiting clamping grooves which keep the extending arms extending forward. The limiting clamping groove is an arc-shaped sheet metal, and the arc-shaped end of the sheet metal is fixed on the clamp board, the other arc-shaped end is corresponding to the outer surface of the extending arm. The high-voltage ground clamp is advantaged by simple structure, convenient operation, and high operating success rate.
Description
Technical field
The utility model relates to the grounding wire device that a kind of transformer station is used, a kind of earthing clamp that is applicable to ultra-high-tension power transmission line specifically.
Background technology
After ultra-high-tension power transmission line has a power failure, before maintenance or repairing operation, must on the shaft tower at the ultra-high-tension power transmission line two ends that have a power failure, mount earthing clamp.The earthing clamp using at present comprises left clamping plate and right clamping plate, and left clamping plate and right clamping plate are hinged by bearing pin, and bearing pin place arranges spring, makes left and right clamping plate keep clamped condition.Clamping plate are divided into two parts by bearing pin, and bearing pin front portion is long is folder leaf, and bearing pin rear portion is shorter is clamp holder.On left folder leaf and right folder leaf, the equidistant position of distance bearing pin arranges the arc-shaped slot of mutual fastening, for clamping electric wire.Between two folder leaves, frizzen is set, the two ends of frizzen are respectively through the osculum on the sidewall of two folder leaves, and one end of frizzen is hinged on the osculum place of one of them folder leaf, the locking ladder that the other end setting of frizzen coordinates with the osculum on folder leaf.Grounding wire device and insulation operating rope are set on left clamp holder or right clamp holder.When use, first earth terminal grounding wire device being connected is arranged on steel tower, then, presses left clamp holder and right clamp holder overcomes spring force, the locking ladder of pressing frizzen is stuck in the osculum place of folder leaf, frizzen supports two folder leaves makes earthing clamp keep open state, and tractive insulation operating rope also relies on the self gravitation of earthing clamp to collide wire, until wire touches out frizzen, clamping plate lose support, closed under spring-force driven dual, clamp wire, complete installment work.
The number of times that each transformer station mounts earthing clamp every year exceedes 300 times; Line voltage distribution grade difference, 110kV hanging wire point is apart from approximately two meters of cross-arms, and 220kV hanging wire point exceedes 3 meters apart from cross-arm; The steel tower of the hanging wire of facing is varied, shaft tower turriform difference, tangent tower is different from strain tower hanging point position, and corner exterior angle is different from interior angle, the wherein the most difficult interior angle that will count strain tower of hanging wire, especially in the situation that corner is larger at this moment, the hanging point of earthing clamp is far from operating personnel, earthing clamp is difficult to during " aimings " wire a blow be, expend a large amount of muscle power, after repeatedly attempting unsuccessfully, can only use action bars, under another one people's cooperation, complete and mount; The factors such as tangent tower operation can be bad because of sight line, earth connection windage yaw is rocked impact articulates operation.
Utility model content
The utility model technical issues that need to address be to provide a kind of simple in structure, easy to operate, be operable to the high-voltage grounding wire clamp that power is high.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is:
High-voltage grounding wire clamp, comprise the left clamping plate and the right clamping plate that respectively by folder leaf and clamp holder are formed hinged by bearing pin, two folder leaves are provided with the hinged extension arm of swivel pin of end cap separately by a head away from the lateral surface of one end of bearing pin articulated position, the outer cylinder of swivel pin is set with the Compress Spring between the end cap of swivel pin and the lateral surface of extension arm, when hinged along folder leaf bearing of trend described in the medial surface of extension arm concordant with the medial surface that presss from both sides leaf.
Further improvement of the utility model is: on described two folder leaves, the position of hinged extension arm is also respectively arranged with the restriction draw-in groove that keeps extension arm forward to extend, limiting draw-in groove is an arc metal plate, one end of the arc of sheet metal is fixed on folder leaf, and the corresponding card of the other end of arc touches the lateral surface of extension arm.
Further improvement of the utility model is: described extension arm arranges one end of swivel pin and offers the height ladder corresponding with folder leaf thickness that is stuck in folder leaf lateral surface, and extension arm arranges smooth chamfering away from the madial wall of one end of swivel pin.
Further improvement of the utility model is: described extension arm is away from the lateral surface riveted joint weight of one end of swivel pin articulated position.
Further improvement of the utility model is: the material of described extension arm is resin plate, and length is 24～26 centimetres, and thickness is 2～3 centimetres, and width is 8～10 centimetres.
Further improvement of the utility model is: the two ends of described extension arm length direction are globoidal structure.
Owing to having adopted technique scheme, the technological progress that the utility model is obtained is:
The utility model is considered to replace original clamping plate to improve the success rate of earth connection operation with longer metal splint at the beginning of design, although but find that such design can realize the object of enlarged opening, and there is higher intensity, but can increase earth connection overall weight, increase operation burden; And because clip entirety is too large, be not easy to carry; Development is more complicated also, and expense is higher.The utility model, after the lateral surface of folder leaf is by the hinged extension arm of powerful Compress Spring, not only can increase opening, and extension arm can also rotate and turn back in not using, and saving space, is easy to carry; When extension arm is in extension state forward time, the medial surface of extension arm is concordant with the medial surface of folder leaf, can again again not operate because of extension arm and the unsmooth needs of folder leaf joining place, further improve operating efficiency in addition.
The utility model arranges restriction draw-in groove at the lateral surface of folder leaf, clamps extension arm and makes to keep extension state, can not shake, the phenomenon of deflection, and more reliable and more stable, operation accurately.After extension arm rotation is turned back, also can not interfere with extension arm.
The utility model arranges weight at the end of extension arm, utilizes certain weight, can hit more reliably wire, handled easily.
Extension arm of the present utility model adopts resin plate material, there is lightweight, good insulation preformance, be easy to processing, the opening of original earthing clamp only has 7 centimetres, also 10 centimetres of less thaies of the degree of depth, the A/F of earthing clamp of the present utility model reaches 25 centimetres, the degree of depth reaches 36 centimetres, has all increased respectively more than 3.5 times.
The two ends of extension arm of the present utility model are globoidal structure, are not easy to scratch wire, improve fail safe.
Always, the utlity model has simple in structure, easy to operate, be operable to the advantage that power is high, actual use found, originally need to attempt the ground wire that is all difficult to hang up above for 10 times, substantially can complete for 1 time now, activity duration tapers to several seconds by a few minutes, and simultaneously it has also solved large corner inner angle side and mount a difficult problem for ground wire.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Wherein, 1, left clamping plate, 11, left folder leaf, 12, left clamp holder, 2, right clamping plate, 21, right folder leaf, 22, right clamp holder, 3, frizzen, 4, spring, 5, extension arm, 6, swivel pin, 61, end cap, 7, Compress Spring, 8, limit draw-in groove, 9, weight, 10, bearing pin.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further details:
High-voltage grounding wire clamp, as shown in Figure 1, comprises the left clamping plate 1 hinged by bearing pin 10 and right clamping plate 2, and bearing pin 10 places arrange spring 4, makes left and right clamping plate keep clamped condition.Left clamping plate 1 are divided into two parts by bearing pin, are respectively left folder leaf 11 and the slightly short left clamp holder 12 of length that length is slightly long, and corresponding right clamping plate 2 are divided into right folder leaf 21 and right clamp holder 22.On left folder leaf 11 and right folder leaf 21, the equidistant position of distance bearing pin arranges the arc-shaped slot of mutual fastening, between left folder leaf 11 and right folder leaf 21, frizzen 3 is set, on left clamp holder 12, be provided with grounding wire device (position of bolt is set in figure) and insulation operating rope (not shown, by the mode identical with grounding wire device connect insulation operating rope or arrange connecting hole wear insulation operating rope).
Two folder leaves are away from one end hinged extension arm 5 separately of bearing pin 10 articulated position, and extension arm 5 is hinged on the lateral surface of folder leaf by a swivel pin 6.The head (being positioned at the outside of the lateral surface of extension arm) of swivel pin 6 is provided with end cap 61 structures, and the radial cross-section of the long-pending middle part pin that is greater than swivel pin 6 of radial cross-section of the end cap 61 of swivel pin is long-pending.The outer cylinder of the pin of swivel pin 6 is set with a powerful Compress Spring 7, and Compress Spring 7 is limited between the end cap 61 of swivel pin and the lateral surface of extension arm 5.Extension arm overcomes spring force and can rotate around swivel pin, when extension arm is in the time extending away from the direction of bearing pin articulated position to suitable folder leaf, extension arm is in extension state forward, and when extension arm is in the time pointing to the direction of bearing pin articulated position to turning back, extension arm is in reverse reflex state.
The material of described extension arm 5 is resin plate, and length is 24～26 centimetres, and thickness is 2～3 centimetres, and width is 8～10 centimetres.Extension arm 5 as shown in Figure 1, its overall structure is a strip, and extension arm 5 arranges one end of swivel pin 6 and offers ladder one, and the height of ladder equals to press from both sides the thickness of leaf away from one end of bearing pin 10 articulated position.The ladder offered ensures that extension arm is in the time of extension state forward, and the medial surface of the medial surface of extension arm and folder leaf in one plane.The two ends of extension arm 5 are preferably globoidal structure, and extension arm 5 arranges smooth chamfering away from the madial wall of one end of swivel pin 6, avoid scratching wire.In addition, extension arm 5 is riveted weight 9 away from the lateral surface of one end that swivel pin 6 is set.
On described two folder leaves, the position of hinged extension arm 6 also arranges respectively a restriction draw-in groove 8.Limiting draw-in groove 8 is an arc metal plate, and one end of the arc of sheet metal is fixed on folder leaf, and the corresponding card of the other end of arc touches the lateral surface of extension arm.Limit draw-in groove 8 in the time that extension arm forward extends, can keep the stability of extension arm 5.In the time of extension arm 5 reverse reflex, by overcoming the elastic force of Compress Spring 7, make extension arm 5 remain on the outside of arc-shaped slot, can not be subject to limiting the interference of draw-in groove 8.
Claims (6)
1. high-voltage grounding wire clamp, comprise the left clamping plate (1) and the right clamping plate (2) that respectively by folder leaf and clamp holder are formed hinged by bearing pin (10), it is characterized in that: two folder leaves pass through the hinged extension arm of a swivel pin (6) (5) separately away from the lateral surface of one end of bearing pin (10) articulated position, the outer cylinder of swivel pin (6) is set with the Compress Spring (7) being positioned between the end cap (61) of swivel pin and the lateral surface of extension arm (5), when hinged along folder leaf bearing of trend described in the medial surface of extension arm (5) concordant with the medial surface that presss from both sides leaf.
2. high-voltage grounding wire clamp according to claim 1, it is characterized in that: on described two folder leaves, the position of hinged extension arm (5) is also respectively arranged with the restriction draw-in groove (8) that keeps extension arm (5) forward to extend, limiting draw-in groove (8) is an arc metal plate, one end of the arc of sheet metal is fixed on folder leaf, and the corresponding card of the other end of arc touches the lateral surface of extension arm (5).
3. high-voltage grounding wire clamp according to claim 1 and 2, it is characterized in that: described extension arm (5) arranges one end of swivel pin (6) and offers the height ladder corresponding with folder leaf thickness that is stuck in folder leaf lateral surface, and extension arm (5) arranges smooth chamfering away from the madial wall of one end of swivel pin (6).
4. high-voltage grounding wire clamp according to claim 3, is characterized in that: described extension arm (5) is away from the lateral surface riveted joint weight (9) of one end of swivel pin (6) articulated position.
5. high-voltage grounding wire clamp according to claim 3, is characterized in that: the material of described extension arm (5) is resin plate, and length is 24～26 centimetres, and thickness is 2～3 centimetres, and width is 8～10 centimetres.
6. according to the high-voltage grounding wire clamp described in claim 4 or 5, it is characterized in that: the two ends of described extension arm (5) length direction are globoidal structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420218153.9U CN203813061U (en) | 2014-04-30 | 2014-04-30 | High-voltage ground clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420218153.9U CN203813061U (en) | 2014-04-30 | 2014-04-30 | High-voltage ground clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203813061U true CN203813061U (en) | 2014-09-03 |
Family
ID=51451777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420218153.9U Withdrawn - After Issue CN203813061U (en) | 2014-04-30 | 2014-04-30 | High-voltage ground clamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203813061U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103996912A (en) * | 2014-04-30 | 2014-08-20 | 国家电网公司 | High-voltage grounding wire clamp |
-
2014
- 2014-04-30 CN CN201420218153.9U patent/CN203813061U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103996912A (en) * | 2014-04-30 | 2014-08-20 | 国家电网公司 | High-voltage grounding wire clamp |
| CN103996912B (en) * | 2014-04-30 | 2016-09-21 | 国家电网公司 | High-voltage grounding wire clamp |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140903 Effective date of abandoning: 20160921 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |